What Does “Reason sth out” Mean?
“Reason sth out” means to think carefully and logically about a problem or situation in order to understand or solve it.
Introduction
The phrase Reason sth out is commonly used when someone tries to find a solution by thinking through all the details step by step. It involves using logic and careful thought rather than guessing or acting quickly. Understanding the Reason sth out meaning helps learners know how to express the process of solving problems or making decisions clearly. This phrasal verb is useful in both everyday conversations and formal discussions where reasoning is required.
Quick Info Box
- Phrasal verb: Reason something out
- Type: Transitive
- Level: B2 (Upper-Intermediate)
- Short meaning: To think carefully to solve or understand something
Structure (Grammar Rules)
“Reason sth out” is a separable phrasal verb. This means you can place the object between the verb and the particle or after the particle.
- Reason something out
- Reason out something
Examples:
- We need to reason the problem out carefully.
- They reasoned out the solution together.
How to Use Reason sth out?
Use “reason sth out” when you want to describe the process of thinking deeply to understand or solve a problem. It often involves breaking down a situation into smaller parts and analyzing them logically. This phrasal verb is perfect for discussing problem-solving in work, school, or personal situations.
Examples
Imagine you have a difficult math problem. You might say:
“I need to reason this problem out before I give an answer.”
Here are more examples:
- She reasoned out the best way to fix the car engine.
- They spent hours reasoning the issue out before making a decision.
- It’s important to reason out your options before choosing a job.
- He reasoned out the mistake in the report quickly.
- We can reason out the answer if we work together.
Common Mistakes
Some learners confuse “reason sth out” with “figure out” or use incorrect word order. Here are common errors:
- Incorrect: I reason out the problem it.
- Correct: I reasoned the problem out.
- Incorrect: She reasoned out carefully the answer.
- Correct: She reasoned the answer out carefully.
Remember, the object must be placed either between “reason” and “out” or after “out.”
Differences / Synonyms
“Reason sth out” is similar to “figure out,” “work out,” and “think through,” but has subtle differences:
- Reason sth out: Focuses on logical thinking and analysis.
- Figure out: More informal, means to find a solution or understand something, not always logically.
- Work out: Often used for solving problems or calculations.
- Think through: Emphasizes careful consideration of all parts of a problem.
Use “reason sth out” when you want to highlight logical and step-by-step thinking.
Common Collocations
People often use “reason sth out” with problems, questions, or situations. These are common objects:
- Problem: To find a solution logically.
- Situation: To understand or analyze a condition.
- Question: To think about the answer carefully.
- Answer: To find or understand a correct response.
- Issue: To analyze and resolve difficulties.
Related Phrasal Verbs
Here are related phrasal verbs of reason sth out:
Real-life Dialogue
Here is a short conversation using “reason sth out”:
Anna: This puzzle is tricky. How can we solve it?
Ben: Let’s reason it out step by step. First, look at the colors.
Anna: Good idea! That helps me see the pattern.
Practice
Try filling in the blanks with the correct form of “reason sth out”:
- We need to __________ the problem __________ before making a decision.
- She __________ the answer __________ after thinking carefully.
- Can you __________ this situation __________ logically?
FAQ
- What does “reason sth out” mean? It means to think carefully and logically to solve or understand something.
- Is “reason sth out” formal or informal? It is neutral and can be used in both formal and informal contexts.
- Can I say “reason out the problem” or “reason the problem out”? Both are correct because the phrasal verb is separable.
- Is “reason sth out” the same as “figure out”? They are similar, but “reason sth out” emphasizes logical thinking more.
- What level is “reason sth out” suitable for? It is best for upper-intermediate learners (B2) and above.

